| 摘要 |
PROBLEM TO BE SOLVED: To provide a deformation recovery device for a grating crib body by frost heaving capable of controlling the influence of the rising ground on the grating crib by frost heaving, absorbing frost heaving force acting on a grating crib material, always operating restoring force to prevent the deformation of the grating crib body by frost heaving and, at the same time, making it return to an original form to prevent the collapse of earth and sand of a slope to the utmost. SOLUTION: An anchor 11 is erected to the center wherein the front end face 2A of the grating crib material 2 is opposed to the ground A and is placed by burying and fixing it in the ground A. An immovable plate 13 provided to the anchor 11 is placed between the ground A and the grating crib materials 2 and 2. A pressure-receiving plate 16 is provided to the upper part side 11B of the anchor 11, and a cylindrical guide body 19 forming a guide hole 19A corresponding to the grating crib material 2 is provided to the lower surface of the pressure-receiving plate 16. An engaging section 20C of a movable body 20 fitted to the front end side of each grating crib material 2 is fitted to the guide hole 19A to support it on the cylindrical guide body 19 so as to enable it to make displacement in the vertical direction. COPYRIGHT: (C)2005,JPO&NCIPI
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